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Some work on CSR

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This commit is contained in:
Steven Le Rouzic
2024-05-13 00:04:44 +02:00
parent f9541157b6
commit f95a85de00
12 changed files with 403 additions and 227 deletions
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33
emulator/csr_unpriv_counter_timer.c Normal file
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#include "emulator/csr.h"
#include "emulator/hart.h"
static uint32_t csr_cycle(Hart* hart, uint32_t v, enum CsrAction a)
{
return hart->instret & 0xFFFFFFFF;
}
static uint32_t csr_cycleh(Hart* hart, uint32_t v, enum CsrAction a)
{
return hart->instret >> 32;
}
static uint32_t csr_time(Hart* hart, uint32_t v, enum CsrAction a)
{
return hart->time & 0xFFFFFFFF;
}
static uint32_t csr_timeh(Hart* hart, uint32_t v, enum CsrAction a)
{
return hart->time >> 32;
}
void csr_init_unpriv_counter_timer(Hart* hart)
{
hart->csrs[CSR_CYCLE].action = csr_cycle;
hart->csrs[CSR_CYCLEH].action = csr_cycleh;
hart->csrs[CSR_INSTRET].action = csr_cycle;
hart->csrs[CSR_INSTRETH].action = csr_cycleh;
hart->csrs[CSR_TIME].action = csr_time;
hart->csrs[CSR_TIMEH].action = csr_timeh;
}